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Commit 590b460c authored by Lars Persson's avatar Lars Persson Committed by Olof Johansson
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arm: initial machine port for artpec-6 SoC 



Basic machine port for the Artpec-6 SoC from Axis
Communications.

Signed-off-by: default avatarLars Persson <larper@axis.com>
Reviewed-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
parent 6ba1c64c

arch/arm/Kconfig

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Original line number Diff line number Diff line
@@ -724,6 +724,8 @@ source "arch/arm/mach-mvebu/Kconfig" 


source "arch/arm/mach-alpine/Kconfig"



source "arch/arm/mach-artpec/Kconfig"



source "arch/arm/mach-asm9260/Kconfig"



source "arch/arm/mach-at91/Kconfig"

arch/arm/Makefile

+1 −0
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@@ -154,6 +154,7 @@ textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000 
# Machine directory name.  This list is sorted alphanumerically

# by CONFIG_* macro name.

machine-$(CONFIG_ARCH_ALPINE)		+= alpine

machine-$(CONFIG_ARCH_ARTPEC)		+= artpec

machine-$(CONFIG_ARCH_AT91)		+= at91

machine-$(CONFIG_ARCH_AXXIA)		+= axxia

machine-$(CONFIG_ARCH_BCM)		+= bcm

arch/arm/mach-artpec/Kconfig

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menuconfig ARCH_ARTPEC

	bool "Axis Communications ARM based ARTPEC SoCs"

	depends on ARCH_MULTI_V7



if ARCH_ARTPEC



config MACH_ARTPEC6

	bool "Axis ARTPEC-6 ARM Cortex A9 Platform"

	depends on ARCH_MULTI_V7

	select ARM_AMBA

	select ARM_GIC

	select ARM_GLOBAL_TIMER

	select ARM_PSCI

	select HAVE_ARM_ARCH_TIMER

	select HAVE_ARM_SCU

	select HAVE_ARM_TWD if SMP

	help

	  Support for Axis ARTPEC-6 ARM Cortex A9 Platform



endif

arch/arm/mach-artpec/Makefile

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obj-$(CONFIG_MACH_ARTPEC6)		:= board-artpec6.o

arch/arm/mach-artpec/board-artpec6.c

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/*

 * ARTPEC-6 device support.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */



#include <linux/amba/bus.h>

#include <linux/clocksource.h>

#include <linux/dma-mapping.h>

#include <linux/io.h>

#include <linux/irqchip.h>

#include <linux/irqchip/arm-gic.h>

#include <linux/mfd/syscon.h>

#include <linux/of_platform.h>

#include <linux/of.h>

#include <linux/of_address.h>

#include <linux/clk-provider.h>

#include <linux/regmap.h>

#include <linux/smp.h>

#include <asm/smp_scu.h>

#include <asm/mach/arch.h>

#include <asm/mach/map.h>

#include <asm/psci.h>

#include <linux/arm-smccc.h>





#define ARTPEC6_DMACFG_REGNUM 0x10

#define ARTPEC6_DMACFG_UARTS_BURST 0xff



#define SECURE_OP_L2C_WRITEREG 0xb4000001



static void __init artpec6_init_machine(void)

{

	struct regmap *regmap;



	regmap = syscon_regmap_lookup_by_compatible("axis,artpec6-syscon");



	if (!IS_ERR(regmap)) {

		/* Use PL011 DMA Burst Request signal instead of DMA

		 *  Single Request

		 */

		regmap_write(regmap, ARTPEC6_DMACFG_REGNUM,

			     ARTPEC6_DMACFG_UARTS_BURST);

	};



	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);

}



static void artpec6_l2c310_write_sec(unsigned long val, unsigned reg)

{

	struct arm_smccc_res res;



	arm_smccc_smc(SECURE_OP_L2C_WRITEREG, reg, val, 0,

		      0, 0, 0, 0, &res);



	WARN_ON(res.a0);

}



static const char * const artpec6_dt_match[] = {

	"axis,artpec6",

	NULL

};



DT_MACHINE_START(ARTPEC6, "Axis ARTPEC-6 Platform")

	.l2c_aux_val	= 0x0C000000,

	.l2c_aux_mask	= 0xF3FFFFFF,

	.l2c_write_sec  = artpec6_l2c310_write_sec,

	.init_machine	= artpec6_init_machine,

	.dt_compat	= artpec6_dt_match,

MACHINE_END